摘要
地聚合物同时具备有机高分子材料、陶瓷材料和水泥材料的优异性能,并且具有制备能耗和碳排放低、原料来源广泛、固废消纳量大等优势.因此它近年来迅速成为无机胶凝材料领域的研究热点.当地聚合物体系中引入钙组分后,主要胶凝相的相互作用过程可能变得更加复杂,地聚合物的微观结构和主要宏观性能也会受到较大影响.综述了含钙地聚合物的研究进展,对于钙组分的引入方式,以及钙组分对地聚合物微结构和性能(包括凝结时间、抗压强度、固化/稳定化重金属性能、抗化学侵蚀性能、碱集料反应、热稳定性、抗泛霜能力等)的影响规律和作用机制进行概括分析,以期为含钙地聚合物的性能调控和应用研究提供技术参考.
Abstract
Geopolymer not only possesses the combined excellent properties of organic polymer materials,ceramic mate-rials and cement materials,but also has many advantages such as low production energy consumption and carbon emis-sions,wide raw material source,and excessive consumption of solid wastes.Therefore,it has rapidly become a research hotspot in the field of inorganic cementitious material in recent years.After introducing the calcium component into geopolymer system,the interaction processes among the main gel phases may become more complicated.Moreover,mi-crostructure and the main performance of geopolymer may be greatly affected.In this paper,we systematically review the research developments in Ca-containing geopolymer,with a particular summary and analysis on the way of introdu-cing calcium component during geopolymer preparing process,as well as the influence rule and action mechanism of cal-cium component on microstructure and performance(including setting time,compressive strength,solidification/stabili-zation of heavy metals,resistance to chemical attack,alkali-aggregate reaction,thermal stability,and resistance to efflo-rescence)of geopolymer.It would provide technical reference for performance control and application study of Ca-contai-ning geopolymer.
基金项目
湖北省教育厅科研项目重点项目(D20222803)
NETL
NSTL
万方数据